參數(shù)資料
型號(hào): EVAL-AD7877EB
廠商: Analog Devices, Inc.
英文描述: Touch Screen Controller
中文描述: 觸摸屏控制器
文件頁(yè)數(shù): 11/44頁(yè)
文件大?。?/td> 1002K
代理商: EVAL-AD7877EB
AD7877
Rev. A | Page 11 of 44
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
500
1000
1500
2000
CODE
2500
3000
3500
4000
0
D
Figure 11. ADC DNL Plot
22
8
10
12
14
16
18
20
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
0
V
DD
(V)
R
O
)
Y+ TO V
DD
Y– TO GND
X+ TO V
DD
X– TO GND
Figure 12. Switch On Resistance vs. V
CC
(X+, Y+: V
CC
to Pin; X, Y: Pin to GND)
22
8
–40
10
12
14
16
18
20
–20
0
20
40
60
80
0
TEMPERATURE (
°
C)
R
O
)
Y+ TO V
DD
Y– TO GND
X+ TO V
DD
X– TO GND
Figure 13. Switch On Resistance vs. Temperature
(X+, Y+: V
CC
to Pin; X, Y: Pin to GND)
16
14
12
10
8
6
4
2
0
–50
90
70
50
30
10
–10
–30
0
TEMPERATURE (
°
C)
R
μ
A
Figure 14. External Reference Current vs. Temperature
2.520
2.515
2.510
2.505
2.500
2.495
2.490
2.485
2.480
2.475
–50
–30
–10
10
30
50
70
90
0
TEMPERATURE (
°
C)
V
R
Figure 15. Internal V
REF
vs. Temperature
2.508
2.496
2.498
2.500
2.502
2.504
2.506
2.6
2.9
3.2
3.5
3.8
V
CC
(V)
4.1
4.4
4.7
5.0
0
V
R
Figure 16. Internal V
REF
vs. V
CC
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